Piston for refrigerant compressors



FIG. 1 is a front elevational view of a piston for refrigerant compressors showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a cross-sectional view taken along the line 6—6 of FIG. 1; and,

FIG. 7 is a perspective view. 

The ornamental design for a piston for refrigerant compressors, as shown. 